/Engine/Source/Runtime/Engine/Classes/Animation/AnimInstance.h
Called before URO interpolation is performed. Useful for modifying bone space transforms etc. before interpolation is performed. Note that this can be called on a worker thread.
virtual void OnUROPreInterpolation_AnyThread ( [FAnimationEvaluationContext](API\Runtime\Engine\Components\FAnimationEvaluationContext) & InOutContext )